Having Sansa doing a little more politicking about Wintefell would have been nice, prodding Royce into finally going 'Fuck it' and telling LF to piss off would have been nice.

Cersei nails certain scenes such as her 'I shit myself' face when the wight charged. Qyburn no doubt was full mast under those robes when he picked up the arm.

I guess a longer season might have thrown in some more cat and mouse in Wintefell such as LF actually being able to make a case and tossing in doubt. "He has seen this? Well I have seen Dorathaki advancing on The Eyrie, I have seen a Faceless Man kill Arya and take her place to sow chaos here. If these visions are wrong than Bran's can be wrong as well'

Plus didn't Sansa cover for LF when he kicked whatsherface out the Moon Door? She was complacent